# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/louis-essen
# Generated: 2026-08-13T10:36:40.857Z

schema: https://schema.org/Person
url: "https://fame.am/person/louis-essen"
name: "Louis Essen"
slug: "louis-essen"
description: "Louis Essen OBE FRS was an English physicist whose most notable achievements were in the precise measurement of time and the determination of the speed of light. He was a critic of Albert Einstein's theory of relativity, particularly as it related to time dilation."
tagline: "English physicist who invented the caesium atomic clock and determined the speed of light (1908-1997)"
gender: "male"
country:
  name: "United Kingdom"
  isoCode: "GB"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1908-09-06"
deathDate: "1997-08-24"
livingStatus: "DECEASED"
scores:
  popularity:           48.26
  momentum:             15.60606060606061
  historical:           12.41764
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  55
  trendDirection:       "BREAKOUT"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://tr.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D9%84%D9%88%D9%8A%D8%B3_%D8%A5%D9%8A%D8%B3%D9%86"
    title: "لويس إيسن"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%84%D9%88%D8%A6%DB%8C%D8%B3_%D8%A7%D8%B3%D8%A7%D9%86"
    title: "لوئیس اسان"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%84%D9%88%D8%A6%DB%8C%D8%B3_%D8%A7%D8%B3%D8%A7%D9%86"
    title: "لوئیس اسان"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Louis_Essen"
    title: "Louis Essen"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%AD%D1%81%D1%81%D0%B5%D0%BD%2C_%D0%9B%D1%8C%D1%8E%D0%B8%D1%81"
    title: "Эссен, Льюис"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q711250"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump